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129703 = 722647
BaseRepresentation
bin11111101010100111
320120220211
4133222213
513122303
62440251
71050100
oct375247
9216824
10129703
11894a2
1263087
1347062
14353a7
152866d
hex1faa7

129703 has 6 divisors (see below), whose sum is σ = 150936. Its totient is φ = 111132.

The previous prime is 129671. The next prime is 129707. The reversal of 129703 is 307921.

It is not a de Polignac number, because 129703 - 25 = 129671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1275 + ... + 1372.

It is an arithmetic number, because the mean of its divisors is an integer number (25156).

2129703 is an apocalyptic number.

129703 is a deficient number, since it is larger than the sum of its proper divisors (21233).

129703 is an equidigital number, since it uses as much as digits as its factorization.

129703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661 (or 2654 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 129703 is about 360.1430271434. The cubic root of 129703 is about 50.6193627824.

The spelling of 129703 in words is "one hundred twenty-nine thousand, seven hundred three".

Divisors: 1 7 49 2647 18529 129703